The concept of a particle is only an approximation, valid in the classical limit.
粒子的概念只是一个近似，在经典极限下有效。
All language is but a poor translation.
有功于天地称为功，有关于世间名教称为名，有学问为富，有廉耻为贵，此即所谓功名富贵。无所求称为道，无欲念称为德，没有世俗的恶习称为文，处事有原则称为章，此即所谓的道德文章。
生活的悲剧不是美好的事物早逝，而是它们变老和变得卑鄙。
The best way to predict the future is to create it.
We cannot change the past, but we can change how we view it.